only allow missing ld.gold, print an error for other missing wrappers

Author: bedroge

eb_hooks.py

@@ -332,10 +332,11 @@ def post_prepare_hook_gcc_prefixed_ld_rpath_wrapper(self, *args, **kwargs):
         for cmd in ('ld', 'ld.gold', 'ld.bfd'):
             wrapper = which(cmd)
             if wrapper is None:
-                # if no wrapper is found, the build machine does not have the corresponding command
-                # (e.g. there is no ld.gold in newer compatibility layers),
-                # and we can simply skip this step
-                continue
+                if cmd in ['ld.gold']:
+                    # newer compatibility layers don't have ld.gold
+                    continue
+                else:
+                    raise EasyBuildError(f"No RPATH wrapper script found for {cmd}.")
             self.log.info("Path to %s wrapper: %s" % (cmd, wrapper))
             wrapper_dir = os.path.dirname(wrapper)
             prefix_wrapper = os.path.join(wrapper_dir, cmd_prefix + cmd)